The global increase in the number of motor vehicles in the urban environment has greatly contributed to the increase in the amount of carbon dioxide released to the atmosphere which contributes to global warming. The study analyzed the relationship between the total CO2 emission from motorized road transport and the atmospheric CO2 concentration using the digital CO2 meter to sample atmospheric air to determine the atmospheric CO2 concentration in parts per million by volume at various time intervals in the Kisumu Bus Park and within the city and its neighborhoods’. The theoretical framework of this study was the Kinetic Theory of Gases. The study recommended that the government should invest heavily in the public transport sector by enacting laws and policies aimed at discouraging the importation and use of low seating capacity vehicles and invest in the high seating capacity vehicles (BRT) and non-motorized road transport.
This study determined the nature of relationship between the volume of CO2 liberated per passenger kilometre travelled by Public Service Vehicles (PSVs) that have large carrying capacity and those that have low carrying capacity in Kisumu City using observation with a view of reducing the amount of CO2 liberated by PSVs (matatus). The study particularly sought to reduce the emission of CO2 into the atmosphere as a result of burning fossil fuel. The study was conceived as a result of the uncontrolled thriving and congestion of the 14-seater public service vehicles commonly called “Nissan Matatu” in Kenya. Over the years, transport pooling has been seen in the light of economizing fuel usage. Due to the global increase in the number of motor vehicles in urban setting, pooling shifted and was seen as a strategy to reduce congestion. The burning of fossil fuels releases CO2 which is a greenhouse gas into the atmosphere. This study sought to quantify the extent of fuel consumption in relation to the seating capacity of the PSV by determining on the average the quantities of fuel burnt by different capacities of the PSVs. Pearson Product-Moment correlation coefficient showed a relationship of -.917 between the volumes of CO2 liberated per passenger kilometre travelled in large carrying capacity and low carrying capacity passenger transportation. This study concluded that the 14-seater PSVs emit twice as much volume of CO2 as the pooled PSVs and recommended the implementation of policies aimed at reducing the usage of the 14-seater PSVs.
Carbon Sequestration as a Climate Change Mitigation Activity-A Review (Review Completed - Accepted)
An unprecedented increase in the atmospheric concentration of carbon dioxide (CO2) from fossil fuel combustion and land use change necessitates identification of strategies for mitigating the threat of the attendant global warming. However, the challenges of climate change can be effectively overcome by the storage of carbon in terrestrial carbon sinks viz. plants, plant products and soils for longer periods of time. Carbon sequestration in this regard is truly a win–win strategy. It restores degraded soils, enhances biomass production, purifies surface and ground waters, and reduces the rate of enrichment of atmospheric CO2 by offsetting emissions due to fossil fuel.